The project PERSONA aims at advancing the paradigm of Ambient Intelligence through the harmonization of Ambient Assisted Living (AAL) Technologies and concepts for the development of sustainable and affordable solutions for the inde- pendent living of senior citizens. PERSONA is one of the integrated projects funded by the European Commission within the 6th Framework Program for IST (Informa- tion Society Technologies) on AAL for the Aging Society. It involves the partici- pation of 21 partners, from Italy, Spain, Germany, Greece, Norway and Denmark, with a total budget of around 12 million Euros. Ambient Assisted Living (AAL) is the concept that groups the set of technologi- cal solutions, named AAL Services, targeting the extension of the time that elderly and disabled people live independently in their preferred environment, i.e. their own four walls, neighborhood and town where they are used to live [1]. AAL Services provide personalized continuity of care and assistance, dynamically adapted to the individual needs and circumstances of the users throughout their lives.